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Related Concept Videos

Inhibitors of Bacterial DNA Synthesis01:28

Inhibitors of Bacterial DNA Synthesis

Bacterial pathogens depend on precise and efficient DNA replication to sustain infection. Two type II topoisomerases—DNA gyrase and topoisomerase IV—are critical to this process, as they resolve DNA supercoiling and unlink chromosomes during replication. Fluoroquinolones, synthetic derivatives of quinolones, exploit this mechanism by stabilizing the transient DNA–enzyme cleavage complex, preventing strand religation, and causing lethal double-strand breaks. These antibiotics are selectively...
Microbial Bioremediation of Pesticides01:28

Microbial Bioremediation of Pesticides

Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...
Gene Regulation in Microbial Communities: Quorum Sensing01:28

Gene Regulation in Microbial Communities: Quorum Sensing

Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
Clinical Significance of Antibiotic Resistance01:25

Clinical Significance of Antibiotic Resistance

Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
Sources of Food Contamination01:29

Sources of Food Contamination

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Related Experiment Video

Updated: Jul 19, 2026

Integrated Field Lysimetry and Porewater Sampling for Evaluation of Chemical Mobility in Soils and Established Vegetation
10:05

Integrated Field Lysimetry and Porewater Sampling for Evaluation of Chemical Mobility in Soils and Established Vegetation

Published on: July 4, 2014

Fluoroquinolones in soil--risks and challenges.

Yolanda Picó1, Vicente Andreu

  • 1Laboratori de Bromatologia i Toxicologia, Facultat de Farmàcia, Universitat de València, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, València, Spain. yolanda.pico@uv.es

Analytical and Bioanalytical Chemistry
|November 4, 2006
PubMed
Summary

Fluoroquinolones (FQs) are crucial antibacterial drugs found in agricultural soils due to manure application. This study reviews their detection in soil and discusses risks like persistence and environmental effects.

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Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff
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Published on: May 15, 2017

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Last Updated: Jul 19, 2026

Integrated Field Lysimetry and Porewater Sampling for Evaluation of Chemical Mobility in Soils and Established Vegetation
10:05

Integrated Field Lysimetry and Porewater Sampling for Evaluation of Chemical Mobility in Soils and Established Vegetation

Published on: July 4, 2014

Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff
08:49

Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff

Published on: May 15, 2017

Area of Science:

  • Environmental Chemistry
  • Soil Science
  • Ecotoxicology

Background:

  • Fluoroquinolones (FQs) are vital antibacterial agents in human and veterinary medicine.
  • Agricultural application of manure and sewage sludge leads to FQ contamination of soils.
  • FQ accumulation in soil poses risks to environmental health and organisms.

Purpose of the Study:

  • To provide an overview of recent advancements in determining FQ levels in solid environmental matrices.
  • To describe the risks and challenges associated with FQ presence in soil.
  • To discuss the fate, effects, and remediation strategies for FQs in soil ecosystems.

Main Methods:

  • Review of recent analytical techniques for FQ determination in soil.
  • Assessment of environmental fate and persistence studies.
  • Evaluation of ecotoxicological data on FQ effects on soil organisms.
  • Analysis of current remediation approaches for FQ-contaminated soils.

Main Results:

  • Significant progress has been made in developing sensitive methods for FQ detection in complex soil matrices.
  • FQs exhibit varying degrees of persistence in soil, influenced by environmental factors.
  • Adverse effects on soil microbial communities and other organisms have been documented.
  • Effective remediation strategies are still under development, posing a challenge.

Conclusions:

  • Accurate determination of FQs in soil is crucial for risk assessment.
  • The persistence and ecotoxicological effects of FQs in soil require careful consideration.
  • Further research is needed to develop efficient and sustainable remediation technologies for FQ-contaminated soils.